Diseño de entibado

PRACTICA EMPRESARIAL EN LA CONSTRUCCIN DEL INTERCEPTOR SANITARIO LLANITO CARRIZAL DEL MUNICIPIO DE GIRN-SANTANDER

MANUAL PARA CLCULO Y PROCEDIMIENTO CONSTRUCTIVO DE ENTIBADOS EN EXCAVACIONES DE ZANJAS DE GRAN PROFUNDIDAD

PARA OBRAS DE SANEAMIENTO BSICO

Autor: EDGAR EDUARDO PARRA GMEZ

UNIVERSIDAD INDUSTRIAL DE SANTANDER FACULTAD DE INGENIERAS FISICOMECNICAS

ESCUELA DE INGENIERA CIVIL BUCARAMANGA

2011

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RESUMEN

TITULO: PRACTICA EMPRESARIAL EN LA CONSTRUCCIN DEL INTERCEPTOR SANITARIO LLANITO CARRIZAL DEL MUNICIPIO DE GIRN-SANTANDER

MANUAL PARA CLCULO Y PROCEDIMIENTO CONSTRUCTIVO DE ENTIBADOS EN EXCAVACIONES DE ZANJAS DE GRAN PROFUNDIDAD PARA OBRAS DE SANEAMIENTO BSICO*

AUTOR: EDGAR EDUARDO PARRA GMEZ**

PALABRAS CLAVES: Excavacin, Entibado, puntales, Largueros, Tablestacas, Presin lateral, talud, Alcantarillados.

CONTENIDO:

En el proceso constructivo de redes de alcantarillados uno de los objetivos finales es la instalacin de la tubera y estructuras que permitan su inspeccin y mantenimiento (pozos de inspeccin). El desarrollo de estas obras en las grandes ciudades cuenta con muy poco espacio debido a las estructuras cercanas a la zanja, al trfico vehicular y a las redes de servicios que se encuentran en el subsuelo, los cuales hacen que el trabajo de instalacin de estas redes deba ser manejado de manera rpida, eficaz, cumpliendo todas las normas tcnicas y de seguridad.

Los taludes verticales en las excavaciones de zanjas de gran profundidades (mayores a 4 m) realizados para la instalacin de las redes de alcantarillado deben ser soportados por sistemas de contencin, como los entibados, los cuales brinden ante todo, seguridad a los trabajadores dentro de estas zanjas, y adems protejan las estructuras que se encuentren adyacentes a la obra.

Para lograr un buen resultado de los entibados es necesario hacer anlisis del comportamiento del terreno y de las presiones laterales que se puedan llegar a crear, para hacer el diseo apropiado de los sistemas de contencin, adems se debe tener un excelente proceso constructivo en las Excavaciones y en la instalacin de los Entibados.

En esta tesis se mostrar el diseo, los tipos de entibados, sus recomendaciones y tipos de sistemas constructivos que se deben llevar a la hora de contener una zanja, teniendo en cuenta recomendaciones de seguridad y prevencin de riegos.

Tambin se desarrollo una herramienta de diseo (hoja de clculo) de entibados en madera y metlicos, que facilite el clculo de los elementos principales que conforman esta contencin.

* Proyecto de grado **Facultad de Ingenieras Fisicomecnicas. Escuela de Ingeniera Civil. Director Ing. Wilfredo del Toro Rodriguez. Codirector Ing. Jaime Morales Morales.

15

ABSTRACT

TITLE: INTERNSHIP AT THE CONSTRUCTION OF LLANITO CARRIZAL SANITARY INTERCEPTOR IN GIRN SANTANDER.

HANDBOOK FOR CALCULATION AND CONSTRUCTIVE PROCEDURE OF TIMBERINGS IN DEEP TRENCHES FOR BASIC SANITATION PURPOSES*

AUTHOR: EDGAR EDUARDO PARRA GMEZ**

KEY WORDS: Excavation, Timbering, Struts, Stringers, Sheet piles, Lateral pressure, Slope, Sewerage.

CONTENT:

In the construction process of sewerages one of the ultimate goals is the installation of pipes and structures that allow inspection and maintenance (manholes). Carrying out these tasks in big cities requires the installation work must be handled quickly, efficiently, and meeting all technical and safety standards since there is very limited space due to structures near the trench, vehicular traffic and utility networks located in the subsoil.

The vertical slopes in excavations of deep trenches (greater than 4 m) made for the installation of sewerages must be supported by retaining systems as Timberings, which primarily provide security to workers inside these trenches, and also protect surrounding structures to the excavation.

To achieve a good Timbering performance is necessary to analyze the behavior of the ground and the lateral pressures that can be created to make the appropriate design of the retaining system; also the Timbering must have an excellent construction process, mainly excavation and installation tasks.

This thesis shows the design, types, recommendations, and buildup systems that must be included when containing a trench, taking into account safety regulations and prevention of risks.

It also developed a design tool (spreadsheet) Timberings wood and metal, that facilitates the calculation of the main elements that make up this retaining.

* Degree project **Faculty of Physicomechanical Engineering. School of Civil Engineering. Director: Eng. Wilfredo del Toro Rodriguez. Codirector: Eng. Jaime Morales Morales.

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